***Code for Appendix Table A4***

**Model 1

regress ln_ie_noparty_2016 party_limit number_seats_m open_seat prior_close_race55 partisan_elect district_system ln_income_percap_2016 Citizens_United##treatment, vce(cluster state_2)

**Model 2

regress ie_noparty_whole party_limit number_seats_m open_seat prior_close_race55 partisan_elect district_system ln_income_percap_2016 Citizens_United##treatment, vce(cluster state_2)

**Model 3

regress ln_IEplus1_noparty_percap_2016 party_limit number_seats_m open_seat prior_close_race55 partisan_elect district_system ln_income_percap_2016 Citizens_United##treatment, vce(cluster state_2)
